Oruguero Blanquinegro Lalage melanoleuca

A medium-sized bird of lowland and foothill forest canopy. Has a black tail with white corners, black wings with a large white patch, and a white rump. Male has a black crown and back and entirely white underparts. Females have a gray crown and back. Northern females have white underparts with a barred throat and chest, while southern females have a gray throat and chest with faint barring below. Similar to Pied Triller, but lacks the white brow and is found in forest rather than open habitats. Song consists of a 1- to 3-syllabled whistled phrase repeated 5-20 times in a row.